| 张银浩,张志军,曾佳君.基于PFC2D的地震作用下湖南某尾矿坝稳定性分析研究[J].南华大学学报(自然科学版),2018,32(1):19~27.[ZHANG Yin-hao,ZHANG Zhi-jun,ZEGN Jia-jun.Stability Analysis of a Tailings Dam in Hunan underthe Seismic Action of PFC2D[J].Journal of University of South China(Science and Technology),2018,32(1):19~27.] |
| 基于PFC2D的地震作用下湖南某尾矿坝稳定性分析研究 |
| Stability Analysis of a Tailings Dam in Hunan underthe Seismic Action of PFC2D |
| 投稿时间：2017-11-18 |
| DOI： |
| 中文关键词: 软件 离散单元法 尾矿坝 稳定性 |
| 英文关键词:PFC2D software discrete element method tailings dam stability |
| 基金项目:国家自然科学基金项目(51774187;51374129)；湖南省科技厅重点研发计划项目(2017SK2280)；湖南省教育厅重点科研基金(17A184)；湖南省自然科学基金项目(2018JJ3448)；衡阳市2014年社会发展科技支撑计划项目(2014KS28)；南华大学校级创新团队计划项目(NHCXTD04) |
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| 中文摘要: |
| 地震作用下尾矿坝中颗粒应力、应变曲线分析是整个尾矿坝安全稳定性分析中的重要组成部分.通过对PFC2D软件在尾矿坝安全特性上的应用研究,运用颗粒流离散元方法,对某尾矿坝进行了数值模拟,为PFC的工程应用提供新实例.模拟结果表明:地震作用下尾矿坝的整体滑移部分多为下部首先产生较大位移之后上部开始滑动,从而由局部滑移造成坝体整体滑移；初期坝和细粒砂相对于基岩更易产生滑移,且滑移位移明显,细粒砂相对于粗粒砂较易产生位移；尾矿坝的剪切应变随着地震荷载的变化而变化且最大变化处位于坡脚处,位移云图出现分层破坏面表明该尾矿坝已经处于破坏状态.通过分析尾矿坝数值模型,从而对地震作用下的尾矿坝安全性能做出判断. |
| 英文摘要: |
| The analysis of particle stress and strain curve in tailings dam is an important part of the safety and stability analysis of tailings dam.Analyzing and filtering software PFC2D in tailings dam safety features on the research and application of the discrete element method put forward by using the particle flow feasibility analysis of the stability of tailings dam safety,and numerical simulation example of a tailings dam.The simulation results show that the slippage of the whole sliding part of the dam is the lower part of the dam body,which causes the upper part of the dam to slide,thus causing the overall slip of the dam body.The initial dam and tailings are more prone to slippage than the bedrock,and the slip displacement is obvious,and the fine grain sand is relatively easy to produce the displacement compared with the coarse grain sand.Seismic wave tailings dam under the action of shear strain changes with the change of the seismic load and the biggest changes is located in the toe area,the displacement cloud map in layered fracture surface showed that the tailings dam has been in a state of destruction. |
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